Hotline miami 1 & 2 are technically more about spree killers/mass shooters, but they technically fit the bill.

If you can find a way to play friday the thirteenth, you might enjoy that.

Dead by Daylight is obvious and multiplayer, but its there.

Manhunt 1 & 2 is about snuff films, but you do kill people to make those so... I dunno.

Hatred? Maybe?

Uhhhh thats all i can think of

Edit: I cant believe i forgot the postal series and Cruelty Squad.